[portland] Still Having List/Tuple Problems
Rich Shepard
rshepard at appl-ecosys.com
Wed Apr 16 21:14:43 CEST 2008
On Wed, 16 Apr 2008, jason kirtland wrote:
> # option 2) make groups, each sharing a common 'left' item
> from itertools import groupby
> from operator import itemgetter
>
> for left, grouped in groupby(list_o_tuples, itemgetter(0)):
> print left
> for left_again, right in grouped:
> print "\t", right
>
> # look under the hood at what groupby() does in 2)
> for left, grouped in groupby(list_o_tuples, itemgetter(0)):
> print left, list(grouped)
Thanks, Jason. I obviously still don't fully understand 'groupedby', but
This is what I need to create nested for loops.
Hope it sticks this time!
Rich
--
Richard B. Shepard, Ph.D. | Integrity Credibility
Applied Ecosystem Services, Inc. | Innovation
<http://www.appl-ecosys.com> Voice: 503-667-4517 Fax: 503-667-8863
More information about the Portland
mailing list